Re: [Xen-devel] [PATCH] xen/pt: Fixup addr validation in xen_pt_pci_config_access_check

[Anthony PERARD <anthony.perard@xxxxxxxxxx>]

On Wed, Jul 05, 2017 at 02:56:35PM +0100, Anoob Soman wrote:
> xen_pt_pci_config_access_check checks if addr >= 0xFF. 0xFF is a valid
> address and should not be ignored.
> 
> Signed-off-by: Anoob Soman <anoob.soman@xxxxxxxxxx>

Acked-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>

> ---
>  hw/xen/xen_pt.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/hw/xen/xen_pt.c b/hw/xen/xen_pt.c
> index b6d71bb..375efa6 100644
> --- a/hw/xen/xen_pt.c
> +++ b/hw/xen/xen_pt.c
> @@ -85,7 +85,7 @@ void xen_pt_log(const PCIDevice *d, const char *f, ...)
>  static int xen_pt_pci_config_access_check(PCIDevice *d, uint32_t addr, int 
> len)
>  {
>      /* check offset range */
> -    if (addr >= 0xFF) {
> +    if (addr > 0xFF) {
>          XEN_PT_ERR(d, "Failed to access register with offset exceeding 0xFF. 
> "
>                     "(addr: 0x%02x, len: %d)\n", addr, len);
>          return -1;

-- 
Anthony PERARD

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